Evidence map›Paper›PMID 31492050›Full record

Trial reportNutrients2019

Caffeine Supplementation Improves Anaerobic Performance and Neuromuscular Efficiency and Fatigue in Olympic-Level Boxers.

Alejandro F San Juan, Álvaro López-Samanes, Pablo Jodra, Pedro L Valenzuela, Javier Rueda, Pablo Veiga-Herreros, Alberto Pérez-López, Raúl Domínguez

Registry-linked trialAbstract readRandomized Controlled Trial
PubMed Full text at PMC Publisher
In one paragraph

Trial report in Nutrients, 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to trial NCT05916352 (The Effect of Caffeine Supplementation on Blood Lactate Level, Performance and Post-Training Fatigue in Elite Basketball Players), which is not on this map. Cited by 37 papers, 5 of them syntheses that pooled it.

0numbers the graph read from it
0cells of the map it votes in
37citing papers in PubMed, 5 pooled it
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

NCT05916352 nacompletednot on this mapstarted 2022, after this paper: background citation

The Effect of Caffeine Supplementation on Blood Lactate Level, Performance and Post-Training Fatigue in Elite Basketball Players

TypeinterventionalSponsorCyprus International UniversityRan2022 to 2023Enrolled50ConditionsSportive Performance, CaffeineArmsCaffeine Supplement
3 · Its place in the literature

Who cites it

37 citing papers in PubMed, 5 syntheses or guidelines pooled it.

  1. Sport supplementation in competitive swimmers: a systematic review with meta-analysis.Journal of the International Society of Sports Nutrition · 2025
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

8 authors.

Alejandro F San JuanLaboratorio de Biomecánica Deportiva, Departamento de Salud y Rendimiento Humano, Facultad de Ciencias de la Actividad Física y del Deporte, Universidad Politécnica de Madrid, 28040 Madrid, Spain.ORCID 0000-0002-7083-7610
Álvaro López-SamanesSchool of Physiotherapy, Faculty of Health Sciences, Francisco de Vitoria University, 28223 Madrid, Spain.ORCID 0000-0003-0721-0150
Pablo JodraFaculty of Health Sciences, Alfonso X El Sabio University, 28691 Villanueva de la Cañada (Madrid), Spain.ORCID 0000-0003-3331-8464
Pedro L ValenzuelaDepartment of Systems Biology, University of Alcalá, 28805 Madrid, Spain.
Javier RuedaLaboratorio de Biomecánica Deportiva, Departamento de Salud y Rendimiento Humano, Facultad de Ciencias de la Actividad Física y del Deporte, Universidad Politécnica de Madrid, 28040 Madrid, Spain.
Pablo Veiga-HerrerosDepartamento de Nutrición Humana y Dietética, Facultad de Ciencias de la Salud, Universidad Alfonso X El Sabio, 28691 Villanueva de la Cañada (Madrid), Spain.
Alberto Pérez-LópezDepartment of Biomedical Sciences, Faculty of Medicine and Health Sciences, University of Alcalá, 28805 Madrid, Spain. alberto_perez-lopez@hotmail.com.ORCID 0000-0003-0220-6240
Raúl DomínguezFacultad de Ciencias de la Salud, Universidad Isabel I, 09003 Burgos, Spain.

Funding

Fundación Banco Santander Costs for fungible material, supplementation and publication costs
6 · The paper itself

Abstract

backgroundthis study examined the effects of caffeine supplementation on anaerobic performance, neuromuscular efficiency and upper and lower extremities fatigue in Olympic-level boxers.

methodsEight male athletes, members of the Spanish National Olympic Team, were enrolled in the study. In a randomized double-blind, placebo-controlled, counterbalanced, crossover design, the athletes completed 2 test sessions after the intake of caffeine (6 mg·kg

resultscaffeine enhanced peak power (6.27%,

conclusionsin these Olympic-level boxers, caffeine supplementation improved anaerobic performance without affecting EMG activity and fatigue levels in the lower limbs. Further benefits observed were enhanced neuromuscular efficiency in some muscles and improved reaction speed.

Indexed as

BoxingDietary SupplementsCaffeineCross-Over StudiesDouble-Blind MethodHumansMaleMuscle ContractionMuscle FatigueMuscle, SkeletalPerformance-Enhancing SubstancesPhysical EnduranceTime FactorsYoung AdultCaffeinePerformance-Enhancing SubstancesanaerobiccaffeineCMJefficiencyelectromyographyergogenic aidsexercisenutritionsport supplementWingate

Identifiers

PMID31492050
PMCPMC6769736

What OpenQuestion holds

Textmetadata
LicenceCC BY
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Registered trials

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.